<template>
  <div>
    <el-menu
      default-active="home"

      :collapse="isCollapse"
    >
    
    <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :key="item.name" :index="item.name">
        <i :class="`el-icon-${item.icon}`"></i>
        <span slot="title">{{ item.label }}</span>
      </el-menu-item>



      <el-submenu v-for="item in hasChildren" :key="item.label" :index="item.label">
        <template slot="title">
          <i :class="`el-icon-${item.icon}`"></i>
          <span slot="title">{{ item.label }}</span>
        </template>
        <el-menu-item-group  v-for="subItem in item.children" :key="subItem.name">
          <el-menu-item :index="subItem.name">{{ subItem.label }}</el-menu-item>
        </el-menu-item-group>
      </el-submenu>

     
    </el-menu>
  </div>
</template>

<style scoped>
.el-menu {
  height: 100vh;
}
</style>


<script>
export default {
  data() {
    return {
      // 导航数据
      menuData: [
        {
          path: "/",
          name: "home",
          label: "首页",
          icon: "s-home",
          url: "Home/Home",
        },
        {
          path: "/mall",
          name: "mall",
          label: "商品管理",
          icon: "video-play",
          url: "MallManage/MallManage",
        },
        {
          path: "/user",
          name: "user",
          label: "用户管理",
          icon: "user",
          url: "UserManage/UserManage",
        },
        {
          label: "其他",
          icon: "location",
          children: [
            {
              path: "/page1",
              name: "page1",
              label: "页面1",
              icon: "setting",
              url: "Other/PageOne",
            },
            {
              path: "/page2",
              name: "page2",
              label: "页面2",
              icon: "setting",
              url: "Other/PageTwo",
            },
          ],
        },
      ],
    };
  },
  methods:{
    // 点击菜单路由跳转
    clickMenu(item){
        if(this.$route.path !== item.path && !(this.$route.path ==='/home' && (item.path ==='/')) ){
            this.$router.push(item.path)
        }
  
    }

  },
  computed:{
    // 有子菜单
   hasChildren(){
      return  this.menuData.filter(item=>item.children)
    },
   // 没有子菜单
   noChildren(){
      return  this.menuData.filter(item=> !item.children)
    },
    isCollapse(){
     return  this.$store.state.tab.isCollapse
    }
  }
};
</script>
